Class: Aerospike::StreamCommand

Inherits:
MultiCommand show all
Defined in:
lib/aerospike/query/stream_command.rb

Overview

:nodoc:

Direct Known Subclasses

QueryCommand, ScanCommand, ScanPartitionCommand

Instance Method Summary collapse

Methods inherited from MultiCommand

#compressed?, #get_node, #initialize, #parse_key, #parse_record, #parse_result, #read_bytes, #skip_key, #stop, #valid?

Methods inherited from Command

#execute, #initialize, #set_delete, #set_exists, #set_operate, #set_query, #set_read, #set_read_for_key_only, #set_read_header, #set_scan, #set_touch, #set_udf, #set_write, #write_bins

Constructor Details

This class inherits a constructor from Aerospike::MultiCommand

Instance Method Details

#parse_group(receive_size) ⇒ Object 



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# File 'lib/aerospike/query/stream_command.rb', line 30

def parse_group(receive_size)
  @data_offset = 0

  while @data_offset < receive_size
    read_bytes(MSG_REMAINING_HEADER_SIZE)
    result_code = @data_buffer.read(5).ord & 0xFF

    # The only valid server return codes are "ok" and "not found".
    # If other return codes are received, then abort the batch.
    case result_code
    when Aerospike::ResultCode::OK
      # noop
    when Aerospike::ResultCode::PARTITION_UNAVAILABLE
      # noop
    when Aerospike::ResultCode::KEY_NOT_FOUND_ERROR
      # consume the rest of the input buffer from the socket
      read_bytes(receive_size - @data_offset) if @data_offset < receive_size
      return nil
    else
      raise Aerospike::Exceptions::Aerospike.new(result_code)
    end

    info3 = @data_buffer.read(3).ord

    # If cmd is the end marker of the response, do not proceed further
    return false if (info3 & INFO3_LAST) == INFO3_LAST

    generation = @data_buffer.read_int32(6)
    expiration = @data_buffer.read_int32(10)
    field_count = @data_buffer.read_int16(18)
    op_count = @data_buffer.read_int16(20)
    key = parse_key(field_count)

    # If cmd is the end marker of the response, do not proceed further
    if (info3 & INFO3_PARTITION_DONE) != 0
      # When an error code is received, mark partition as unavailable
      # for the current round. Unavailable partitions will be retried
      # in the next round. Generation is overloaded as partitionId.
      if result_code != 0
        @tracker&.partition_unavailable(@node_partitions, generation)
      end

      next
    end

    if result_code == 0
      if @recordset.active?
        @recordset.records.enq(parse_record(key, op_count, generation, expiration))
      else
        expn = @recordset.is_scan? ? SCAN_TERMINATED_EXCEPTION : QUERY_TERMINATED_EXCEPTION
        raise expn
      end

      # UDF results do not return a key
      @tracker&.set_last(@node_partitions, key, key.bval) if key
    end
  end # while

  true
end